"The high detection rate found at this bright level suggests that there must be a significant number of systems containing fainter dust, undetectable in our survey," said study co-author Olivier Absil from the University of Liège.

Early last week in an interview with The Telegraph, John Grisham made some controversial comments which led to public outcry: "We have prisons now filled with guys my age -- 60-year-old white men -- in prison, who've never harmed anybody, would never touch a child, but they got online one night, started surfing around, probably had too much to drink or whatever, pushed the wrong buttons, went too far, and got into child porn."

He wanted to be sure that he was wasn't just inheriting something or following someone else's lead.